Giant yolk sac tumor operated under percutaneous cardiopulmonary support (PCPS) and aspiration device.

We here report the case of an 18-year-old man with a giant yolk sac tumor that is resected under percutaneous cardiopulmonary support (PCPS). Because this patient had severe dyspea when he lay in a supine position, we resected the tumor. We used PCPS during the operation for the induction and maintenance of ventilation because his trachea and left main bronchus were collapsed by the tumor.

[A long-term survival of the patient with hepatocellular carcinoma and advanced portal vein and bile duct tumor thrombosis successfully treated with multimodal treatments].

We reported a 60-year-old male patient with hepatocellular carcinoma (HCC) of 5cm in diameter with advanced tumor thrombosis in the left main trunk of portal vein and bile duct. He was treated with multimodal treatments resulting in a long-term survival of more than 4 years. At first, he was treated with transcatheter arterial chemoembolization (TACE) in April 1999, but the therapeutic effect was insufficient.

Involvement of matrix metalloproteinase-7 in invasion-metastasis through induction of cell dissociation in pancreatic cancer.

Epidermal growth factor receptor (EGFR) mediated mitogen-activated protein kinase kinase (MEK)/extracellular signal-regulated kinase (ERK) signaling pathway was isolated as invasion-metastasis related factor in pancreatic cancer in our previous studies. Matrix metalloproteinase-7 (MMP-7) and tight junction (TJ) proteins are indicated to be involved in cancer invasion-metastasis. To clarify the underlying mechanism of involvement of MMP-7 in cancer invasion, western blotting, invasion assay and immunohistochemistry were performed in dissociated (PC-1.

[Multidisciplinary treatment for advanced hepatocellular carcinoma with portal vein tumor thrombosis and adrenal/lung metastases].

The patient was a 73-year-old male who was identified with an increase of serum PIVKA-II during a treatment for chronic hepatitis B. Hepatocellular carcinoma (HCC) of 60 mm in diameter with satellite nodules was diagnosed in segment 8 of the liver. In addition, portal vein tumor thrombosis (PVTT) of the right branch (Vp3) and metastases to bilateral lung and right adrenal gland were recognized.

Arrangement of expression and distribution of tight junction protein claudin-1 in cell dissociation of pancreatic cancer cells.

Mitogen-activated protein kinase kinase 2 (MEK2) was isolated previously as a potential factor related to cancer cell dissociation in highly (PC-1.0) and weakly (PC-1) invasive pancreatic cancer cells. On the other hand, changes of structure and function of tight junction (TJ) are reported to be correlated with carcinogenesis and tumor development.

Relationship between activation of epidermal growth factor receptor and cell dissociation in pancreatic cancer.

In our previous investigations, mitogen-activated protein kinase kinase 2 (MEK2)/extracellular signal-regulated kinase 2 (ERK2) signaling pathway was found to be correlated with the cell dissociation induced by dissociation factor (DF) in pancreatic cancer cells. In this study, the expressions of epidermal growth factor receptor (EGFR), phosphorylated EGFR (p-EGFR), and its downstream kinases MEK1/2 and ERK1/2, were analyzed to clarify the regulatory mechanism of cell dissociation in pancreatic cancer cells. Two hamster (PC-1.

[A successfully resected case of colorectal cancer with multiple liver metastases treated with systemic chemotherapy].

The patient was a-54-year-old man. Sigmoidectomy was performed for sigmoid colon cancer in 1991. Partial liver resection in 1992 and microwave coagulation therapy (MCT) in 1994 were carried out for liver metastasis.

[Significance of local ablation therapy following portal embolization therapy for hepatocellular carcinoma with portal vein tumor thrombus].

We have performed ablation therapy for 4 patients who had hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT). In order to avoid intrahepatic metastasis due to ablation, we treated portal venous embolization before ablation. After treatment, computed tomography revealed no viable area in the treated lesion and no dissemination in the portal vein.